With IconWorkshop make your own icons for Windows, MacOS and Unix. Create Windows icons up to 256×256 for Windows Vista/7 and Macintosh icons up to 512×512 for Leopard (MacOS 10.5). Unix/Linux uses PNG icons. IconWorkshop creates PNG images with alpha channel in a few clicks including from existing Windows and Mac OS icons.The new generation of icons uses variable transparency (alpha channel). This alpha transparency permits creating beautiful icons with smooth borders and shadows. IconWorkshop, which fully support alpha transparency, is the professional tool that you need to create such icons.